I maybe wrong but I remember on a animation site called Micheal Sporn Animation where they have model sheets, concept art, walking cycles and many wonderful things that they have there. I found some concept drawings of Goofy in a ballad to-to outfit. I may have be for a forgotten short or maybe in a fantasia sequence. But if Disney ever makes a third one (before you get there, which hopefully not because I would love too see your version .) I wouldn't be to surprised. because they already did Mickey and Donald.